Laser Forming of Metal Foam Sandwich Panels: Effect of Panel Manufacturing Method
Laser Forming of Metal Foam Sandwich Panels: Effect of Panel Manufacturing Method
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金属泡沫夹芯板的激光成型：板材制造方法的影响
DOI：
10.1115/1.4043194
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发表时间：
2019
期刊：
影响因子：
--
通讯作者：
Yao, Y. Lawrence
中科院分区：
文献类型：
--
作者：
Bucher, Tizian;Zhang, Min;Chen, Chang Jun;Verma, Ravi;Li, Wayne;Yao, Y. Lawrence
金属泡沫夹芯板由于其优异的强度重量比、刚度和减震能力，在各种工业应用中具有巨大的潜力。最近的一项研究表明，通过激光成形，这种材料可以成功地弯曲成大角度，从而为更经济地实施夹层板铺平了道路。这项研究还对弯曲的基本机制有了基本的了解，并建立了准确的数值模型。在此基础上，进一步研究了泡沫芯结构、面板和泡沫芯组成以及粘接方法对弯曲效率和弯曲极限的影响。通过比较两种根本不同的夹层板类型，对这些因素进行了单独和共同的研究。充分考虑了面板/芯材界面处的热应力。在不同的几何精度水平下进行了数值模拟，以补充各种工艺条件下的弯曲实验。对板材性能和工艺条件之间的相互作用进行了论证和讨论。
Sandwich panels with metal foam cores have a tremendous potential in various industrial applications due to their outstanding strength-to-weight ratio, stiffness, and shock absorption capacity. A recent study paved the road toward a more economical implementation of sandwich panels, by showing that the material can be successfully bent up to large angles using laser forming. The study also developed a fundamental understanding of the underlying bending mechanisms and established accurate numerical models. In this study, these efforts were carried further, and the impact of the foam core structure, the facesheet and foam core compositions, and the adhesion method on the bending efficiency and the bending limit was investigated. These factors were studied individually and collectively by comparing two fundamentally different sandwich panel types. Thermally induced stresses at the facesheet/core interface were thoroughly considered. Numerical modeling was carried out under different levels of geometric accuracy to complement bending experiments under a wide range of process conditions. Interactions between panel properties and process conditions were demonstrated and discussed.
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